EP0936385A2 - Displacement and angle sensor - Google Patents

Displacement and angle sensor Download PDF

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Publication number
EP0936385A2
EP0936385A2 EP99102133A EP99102133A EP0936385A2 EP 0936385 A2 EP0936385 A2 EP 0936385A2 EP 99102133 A EP99102133 A EP 99102133A EP 99102133 A EP99102133 A EP 99102133A EP 0936385 A2 EP0936385 A2 EP 0936385A2
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EP
European Patent Office
Prior art keywords
angle sensor
path
target
measuring coils
measuring
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Application number
EP99102133A
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German (de)
French (fr)
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EP0936385B1 (en
EP0936385A3 (en
Inventor
Felix Mednikov
Karl Wisspeintner
Norbert Reindl
Eduard Sammereier
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Micro Epsilon Messtechnik GmbH and Co KG
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Micro Epsilon Messtechnik GmbH and Co KG
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Publication of EP0936385A3 publication Critical patent/EP0936385A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/044—Ratio selector apparatus consisting of electrical switches or sensors

Definitions

  • the present invention relates to a displacement-angle sensor, in particular for Determination of an engaged gear in the motor vehicle area.
  • this is a path-angle sensor for determination a distance traveled in one direction and an angle in a plane, the is orthogonal to the direction of the path.
  • the way it works is based on Angle sensor, however, on a displacement sensor, the determined path then through a suitable conversion device to the appropriate angle must be converted. Likewise, a determined angle can be easily in the corresponding distance traveled can be converted. The one from the The knowledge gained from the present invention can thus be obtained from a specialist without any problems also on angle-displacement sensors, displacement-displacement sensors or angle-angle sensors are transmitted.
  • the present invention is therefore based on the object of a displacement-angle sensor to design and develop such that it is inexpensive to manufacture is, it has a simple and robust construction, its use is simple and is inexpensive and it has a high measuring accuracy.
  • the displacement-angle sensor according to the invention achieves the above task the features of claim 1.
  • the Generic sensor designed such that it has four measuring coils in an X-Y plane arranged on a bobbin at an angle of 90 ° to each other and are connected to an evaluation electronics, and has a target, which in the is essentially movable parallel to the X-Y plane relative to the measuring coils and thereby induced voltages in the measuring coils, from which the evaluation electronics the distance traveled in the Y direction and the angle of the target in a Z-X plane determined.
  • a path-angle sensor which according to the Eddy current principle works, is extremely robust. This makes the sensor according to the invention in particular for rough use in the motor vehicle sector, for example to determine an engaged gear.
  • the displacement-angle sensor according to the invention has a high measuring accuracy on, making it particularly useful for determining short distances and small angles, such as for example when determining an engaged gear in the Motor vehicle sector occur is suitable.
  • the path and angle are measured inductively and therefore non-contact, which leads to the displacement angle sensor according to the invention is exposed to almost no wear and has an extremely long service life.
  • the coil carrier with the measuring coils arranged on it is on an area of the motor vehicle, fixed relative to which the shift lever moved during the switching process, for example on the shift gate. If now the gear selector lever for engaging a specific gear during the Shifting is moved relative to the shift gate, that also moves Target relative to the measuring coils. This creates voltages in the measuring coils , from which the evaluation electronics determine the position of the gear selector lever in the Y direction and determined its angle in the Z-X plane.
  • the target is superimposed at least in the middle position at least partially all four measuring coils.
  • the target be the two opposite in the X direction Measuring coils each superimposed at least by the measuring range ⁇ x, or that the Target the two measuring coils opposite each other at least in the Y direction overlaid by the measuring range ⁇ y.
  • each opposite measuring coils are arranged at a distance from each other and the adjacent measuring coils overlap each other at least partially.
  • the path-angle sensor with the at least partially overlapping Measuring coils to ensure that the target the measuring coils over the entire Measuring range overlaid in both the X and Y directions and thus over the entire measuring range of the displacement-angle sensor a particularly high accuracy is achieved
  • the measuring coils opposite in the X direction have a width have at least as large as the dimensions of the target in the Y direction plus double the measuring range ⁇ y and that in the Y direction opposite measuring coils have a width that is at least as large like the dimensions of the target in the X direction plus double Measuring range ⁇ x.
  • each two opposing measuring coils to an inductive half bridge are interconnected.
  • the inductive half bridges are again in AC-powered bridge circuits (evaluation circuits of the Evaluation electronics) included.
  • the evaluation electronics can thus from the in the Measuring coils induced voltages the position of the target relative to the measuring coils and determine its angular position.
  • the target is around one in the Y direction extending bearing axis rotatable, and the coil carrier has the shape of a cylinder segment, the bearing axis being the longitudinal axis of the cylinder forms. This ensures that even with circular movements the target relative to the measuring coils always a constant distance between the Target and the measuring coils is given. Because of this constant distance between the target and the measuring coils, the measuring accuracy of the invention Path-angle sensor significantly improved.
  • the Coil carrier in a cylindrical recess in a sensor housing is clamped.
  • a coil carrier which is flat per se can be used without great effort be brought into the shape of a cylinder segment.
  • the coil carrier is advantageously in the cylindrical recess of the Sensor housing snapped into place.
  • the coil carrier can also be replaced by a cylindrical curved element in the cylindrical recess of the Sensor housing are pressed. This has the advantage that it is cylindrical curved element in front of the coil carrier with the measuring coils arranged thereon external influences, especially mechanical damage and Moisture, can protect.
  • the bobbin can be advantageous according to another Further development of the invention have the shape of a spherical segment.
  • the target is rotatable about a bearing point that is the center of the ball forms. This ensures that even with spherical segment Movements of the target relative to the measuring coils always a constant distance between the target and the measuring coils. Through this always constant distance between target and measuring coils, the measuring accuracy of the displacement-angle sensor according to the invention significantly improved.
  • Target made of aluminum This leads to a reduction in the weight of the displacement-angle sensor according to the invention.
  • the target can also consist of a ferromagnetic material.
  • a target from this Material is particularly suitable for inductive displacement and angle measurement.
  • the coil former consists of Plastic.
  • the measuring coils are wound from coil wire.
  • the measuring coils can Reduction of the manufacturing costs but also printed on the bobbin be.
  • the measuring coils themselves can have a wide variety of shapes and be tailored to specific areas of application and conditions of use. So are not only square measuring coil cross sections but also for example semicircular cross sections conceivable.
  • the measuring coils can be flat, for example or be hemispherical.
  • a displacement-angle sensor according to the invention is designated in its entirety with the reference number 1 in a first embodiment.
  • the displacement-angle sensor 1 has a coil carrier 2 made of plastic in the XY plane, on which four measuring coils 3, 4, 5, 6 are arranged at an angle of 90 ° to one another.
  • the position of the displacement-angle sensor 1 in the Cartesian coordinate system is chosen purely at random and is only of an explanatory nature.
  • the measuring coils 3, 4, 5, 6 are connected to evaluation electronics (not shown).
  • the displacement angle sensor 1 also has a target 7 made of ferromagnetic material, which can be moved essentially parallel to the XY plane relative to the measuring coils 3, 4, 5, 6.
  • the target 7 at least partially overlaps all four measuring coils 3, 4, 5, 6 at least in its central position.
  • the movement of the target 7 induces voltages U ind3 , U ind4 , U ind5 , U ind6 in the measuring coils 3, 4, 5, 6.
  • the evaluation electronics determine the distance s traveled in the Y direction and the angle ⁇ of the target in a ZX plane. More precisely, the distance covered s is determined from the induction voltages U ind3 and U ind5 of the two measuring coils 3 and 5, and the angle ⁇ is determined from the induction voltages U ind4 and U ind6 of the two measuring coils 4 and 6.
  • the target 7 is rigidly connected to the gear selector lever (not shown) and follows its movements during the shifting process.
  • the coil carrier 2 with the measuring coils 3, 4, 5, 6 arranged thereon is fastened to the shifting gate (not shown), relative to which the shifting lever moves during the shifting process. If the gear selector lever for shifting a specific gear is moved relative to the shifting gate during the shifting process, the target 7 also moves relative to the measuring coils 3, 4, 5, 6.
  • Each two opposite measuring coils 3 and 5 or 4 and 6 are one inductive half bridge (not shown) interconnected.
  • the inductive Half bridges are in turn in AC-powered bridge circuits (Evaluation circuits of the evaluation electronics) included.
  • the path-angle sensor shown in FIG. 1 they are opposite each other lying measuring coils 3 and 5 or 4 and 6 at a distance from each other arranged.
  • the respectively adjacent measuring coils 3, 4, 5, 6 overlap at least partially.
  • the measuring coils 4 and 6 lying opposite in the X direction have a width that is at least as large as the dimensions of the target 7 in the Y direction plus twice the measuring range ⁇ y.
  • the one in the Y direction across from lying measuring coils 3 and 5 have a width that is at least as large is like the dimensions of the target 7 in the X direction plus double Measuring range ⁇ x.
  • the four measuring coils 3, 4, 5, 6 side by side on the Coil carrier 2 arranged.
  • the target 7 overlaps the two in the X direction opposite measuring coils 4 and 6 each at least around the measuring range ⁇ x and the two measuring coils 3 and 5 opposite each other in the Y direction at least around the measuring range ⁇ y.
  • the displacement angle sensor 1 in the embodiment from FIG. 1 is in shown perspective view.
  • the target 7 is around one in the Y direction extending bearing axis 8 rotatable.
  • the coil carrier 2 has the shape of a Cylinder segment, with the bearing axis 8 forming the longitudinal axis of the cylinder.
  • the displacement angle sensor 1 determines that of the target 7 in the Y direction traveled distance s and the angle ⁇ of the target 7 about the bearing axis 8 in one Z-X plane.
  • the coil carrier 2 has a flat shape per se. To put it in the shape of a To get a cylinder segment, it is placed in a cylindrical recess in one Sensor housing (not shown) clamped. This is the case with a coil carrier 2 made of bendable plastic is no problem. In the case of the bobbin 2 arranged measuring coils 3, 4, 5, 6 must be ensured that they from the Coil material here and this from the type of attachment to the coil body 2 Bear the bend in the shape of a cylinder segment.
  • the bobbin 2 is in the cylindrical recess of the sensor housing either snapped or is in the cylindrical recess by a cylindrically curved element of the sensor housing and anchored in it.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The sensor has four measurement coils (3-6) in an X-Y plane on a carrier (2) arranged at 90 degrees to each other and connected to evaluation electronics. A target (7) can be moved parallel to the X-Y plane and relative to the coils, inducing voltages in the coils from which the evaluation electronics determine the distance covered in the Y-direction and the angle of the target in the Z-X plane.

Description

Die vorliegende Erfindung betrifft einen Weg-Winkel-Sensor, insbesondere zur Bestimmung eines eingelegten Ganges im Kraftfahrzeugbereich.The present invention relates to a displacement-angle sensor, in particular for Determination of an engaged gear in the motor vehicle area.

Grundsätzlich handelt es sich hier um einen Weg-Winkel-Sensor zur Bestimmung eines zurückgelegten Weges in einer Richtung und eines Winkels in einer Ebene, die orthogonal zu der Richtung des Weges verläuft. In seiner Funktionsweise beruht ein Winkel-Sensor jedoch auf einem Weg-Sensor, wobei der ermittelte Weg dann durch eine geeignete Umwandlungsvorrichtung in den entsprechenden Winkel umgewandelt werden muß. Ebenso kann ein ermittelter Winkel problemlos in den entsprechenden zurückgelegten Weg umgewandelt werden. Die aus dem Gegenstand der vorliegenden Erfindung gewonnen Erkenntnisse können somit von einem Fachmann ohne weiteres auch auf Winkel-Weg-Sensoren, Weg-Weg-Sensoren oder Winkel-Winkel-Sensoren übertragen werden.Basically, this is a path-angle sensor for determination a distance traveled in one direction and an angle in a plane, the is orthogonal to the direction of the path. The way it works is based on Angle sensor, however, on a displacement sensor, the determined path then through a suitable conversion device to the appropriate angle must be converted. Likewise, a determined angle can be easily in the corresponding distance traveled can be converted. The one from the The knowledge gained from the present invention can thus be obtained from a specialist without any problems also on angle-displacement sensors, displacement-displacement sensors or angle-angle sensors are transmitted.

Aus der Praxis sind bereits verschiedene Weg-Winkel-Sensoren bekannt. So wird beispielsweise im Kraftfahrzeugbereich die Stellung eines Gangwahlhebels und damit der eingelegte Gang mittels mehrerer Sensor-Potentiometer ermittelt. Derartige bekannte Weg-Winkel-Sensoren haben jedoch den Nachteil, daß sie nur eine geringe Auflösung und damit nur eine geringe Meßgenauigkeit aufweisen. Außerdem weisen sie üblicherweise nur eine begrenzte Lebensdauer auf, da während des Meßvorgangs der Schleifer der Sensor-Potentiometer über die Potentiometerspulen schleift und der Schleifer dadurch einem Verschleiß unterworfen ist. Zuweilen weisen die Sensor-Potentiometer eine Obergrenze für die Betätigungsgeschwindigkeit auf, deren Überschreitung lebensdauerverkürzend wirkt. Darüber hinaus machen veränderliche Schleifer-Übergangswiderstände die Sensor-Potentiometer unzuverlässig.Various displacement-angle sensors are already known in practice. So will for example in the motor vehicle sector, the position of a gear selector lever and so that the gear engaged is determined by means of several sensor potentiometers. Such Known displacement-angle sensors have the disadvantage that they are only one have low resolution and thus only a low measuring accuracy. Furthermore they usually only have a limited lifespan because during the Measuring process of the wiper of the sensor potentiometer via the potentiometer coils grinds and the grinder is subject to wear. Sometimes point the sensor potentiometers set an upper limit for the actuation speed, if exceeded, this has a shortening lifespan. They also make changeable Slider contact resistances make the sensor potentiometers unreliable.

Darüber hinaus ist es aus dem Kraftfahrzeugbereich bekannt, die Stellung des Gangwahlhebels und damit den eingelegte Gang mittels photoelektrischer oder optischer Sensoren zu bestimmen. Diese bekannten Sensoren haben allerdings den Nachteil, daß ihr Sensorsignal in hohem Maße temperaturabhängig ist und daß ihr Einsatz relativ aufwendig und teuer ist. Darüber hinaus verkürzen äußere Umwelteinflüsse, insbesondere hohe Temperaturen und Luftfeuchte, die Lebensdauer dieser bekannten Sensoren zum Teil erheblich. In addition, it is known from the automotive field, the position of the Gear selector lever and thus the gear engaged by means of photoelectric or to determine optical sensors. However, these known sensors have the Disadvantage that their sensor signal is highly temperature-dependent and that you Use is relatively complex and expensive. In addition, shorten outer Environmental influences, especially high temperatures and air humidity, the service life of these known sensors, in some cases considerably.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Weg-Winkel-Sensor derart auszugestalten und weiterzubilden, daß er preiswert in der Herstellung ist, er einen einfachen und robusten Aufbau aufweist, sein Einsatz einfach und preiswert ist und er eine hohe Meßgenauigkeit aufweist.The present invention is therefore based on the object of a displacement-angle sensor to design and develop such that it is inexpensive to manufacture is, it has a simple and robust construction, its use is simple and is inexpensive and it has a high measuring accuracy.

Der erfindungsgemäße Weg-Winkel-Sensor löst die voranstehende Aufgabe durch die Merkmale des Patentanspruches 1. Danach ist der eingangs bereits erörterte gattungsbildende Sensor derart ausgestaltet, daß er vier Meßspulen, die in einer X-Y-Ebene auf einem Spulenträger in einem Winkel von 90° zueinander angeordnet und an eine Auswerteelektronik angeschlossen sind, und ein Target aufweist, das im wesentlichen parallel zu der X-Y-Ebene relativ zu den Meßspulen bewegbar ist und dadurch in den Meßspulen Spannungen induziert, aus denen die Auswerteelektronik den zurückgelegten Weg in Y-Richtung und den Winkel des Target in einer Z-X-Ebene ermittelt.The displacement-angle sensor according to the invention achieves the above task the features of claim 1. After that is the one already discussed Generic sensor designed such that it has four measuring coils in an X-Y plane arranged on a bobbin at an angle of 90 ° to each other and are connected to an evaluation electronics, and has a target, which in the is essentially movable parallel to the X-Y plane relative to the measuring coils and thereby induced voltages in the measuring coils, from which the evaluation electronics the distance traveled in the Y direction and the angle of the target in a Z-X plane determined.

Erfindungsgemäß ist erkannt worden, daß ein Weg-Winkel-Sensor, der nach dem Wirbelstromprinzip arbeitet, äußerst robust ausgestaltet ist. Dadurch eignet sich der erfindungsgemäße Sensor insbesondere für den rauhen Einsatz im Kraftfahrzeugbereich, beispielsweise zur Bestimmung eines eingelegten Ganges. Darüber hinaus weist der erfindungsgemäße Weg-Winkel-Sensor eine hohe Meßgenauigkeit auf, wodurch er insbesondere zur Bestimmung kurzer Wege und kleiner Winkel, wie sie beispielsweise bei der Bestimmung eines eingelegten Ganges im Kraftfahrzeugbereich auftreten, geeignet ist.According to the invention it has been recognized that a path-angle sensor, which according to the Eddy current principle works, is extremely robust. This makes the sensor according to the invention in particular for rough use in the motor vehicle sector, for example to determine an engaged gear. About that In addition, the displacement-angle sensor according to the invention has a high measuring accuracy on, making it particularly useful for determining short distances and small angles, such as for example when determining an engaged gear in the Motor vehicle sector occur is suitable.

Im konkreten erfolgt die Messung von Weg und Winkel induktiv und damit berührungslos, was dazu führt, daß der erfindungsgemäße Weg-Winkel-Sensor nahezu keinem Verschleiß ausgesetzt ist und eine äußerst hohe Lebensdauer aufweist. Beim Einsatz des erfindungsgemäßen Weg-Winkel-Sensors im Kraftfahrzeugbereich zur Bestimmung eines eingelegten Ganges wird das Target mit dem Gangwahlhebel starr verbunden und folgt seinen Bewegungen während des Schaltvorgangs. Der Spulenträger mit den darauf angeordneten Meßspulen ist an einem Bereich des Kraftfahrzeugs, befestigt, relativ zu dem sich der Schalthebel während des Schaltvorgangs bewegt, beispielsweise an der Schaltkulisse. Wenn nun der Gangwahlhebel zum Einlegen eines bestimmten Ganges während des Schaltvorgangs relativ zu der Schaltkulisse bewegt wird, bewegt sich auch das Target relativ zu den Meßspulen. Dadurch werden in den Meßspulen Spannungen induziert, aus denen die Auswerteelektronik die Position des Gangwahlhebels in Y-Richtung und dessen Winkel in der Z-X-Ebene ermittelt.In concrete terms, the path and angle are measured inductively and therefore non-contact, which leads to the displacement angle sensor according to the invention is exposed to almost no wear and has an extremely long service life. When using the displacement-angle sensor according to the invention in Motor vehicle area for determining an engaged gear with the target rigidly connected to the gear selector lever and follows its movements during Switching operation. The coil carrier with the measuring coils arranged on it is on an area of the motor vehicle, fixed relative to which the shift lever moved during the switching process, for example on the shift gate. If now the gear selector lever for engaging a specific gear during the Shifting is moved relative to the shift gate, that also moves Target relative to the measuring coils. This creates voltages in the measuring coils , from which the evaluation electronics determine the position of the gear selector lever in the Y direction and determined its angle in the Z-X plane.

Gemäß einer vorteilhaften Weiterbildung der Erfindung überlagert das Target zumindest in der Mittelstellung alle vier Meßspulen zumindest teilweise. Dadurch kann die Auswerteelektronik aus den in den Meßspulen induzierten Spannungen die Position des Gangwahlhebels und dessen Winkel-Position mit einer besonders hohen Genauigkeit ermitteln.According to an advantageous development of the invention, the target is superimposed at least in the middle position at least partially all four measuring coils. Thereby can the evaluation electronics from the voltages induced in the measuring coils Position of the gear lever and its angular position with a special determine high accuracy.

Um zu gewährleisten, daß das Target die Meßspulen über den gesamten Meßbereich sowohl in X- als auch in Y-Richtung überlagert und dadurch über den gesamten Meßbereich des Weg-Winkel-Sensors eine besonders hohe Genauigkeit erzielt wird, wird gemäß einer besonders vorteilhaften Weiterbildung der Erfindung vorgeschlagen, daß das Target die zwei in X-Richtung gegenüberliegenden Meßspulen jeweils mindestens um den Meßbereich Δx überlagert, bzw. daß das Target die zwei in Y-Richtung gegenüberliegenden Meßspulen jeweils mindestens um den Meßbereich Δy überlagert.To ensure that the target the measuring coils over the entire Measuring range overlaid in both the X and Y directions and thus over the entire measuring range of the displacement-angle sensor a particularly high accuracy is achieved, according to a particularly advantageous development of the invention suggested that the target be the two opposite in the X direction Measuring coils each superimposed at least by the measuring range Δx, or that the Target the two measuring coils opposite each other at least in the Y direction overlaid by the measuring range Δy.

Noch genauere und zuverlässigere Meßergebnisse lassen sich erzielen, wenn gemäß einer anderen vorteilhaften Weiterbildung der Erfindung die jeweils gegenüberliegenden Meßspulen in einem Abstand zueinander angeordnet sind und die benachbarten Meßspulen sich jeweils zumindest teilweise überlagern.Even more accurate and reliable measurement results can be achieved if according to another advantageous development of the invention, each opposite measuring coils are arranged at a distance from each other and the adjacent measuring coils overlap each other at least partially.

Um bei dem Weg-Winkel-Sensor mit den sich zumindest teilweise überlagernden Meßspulen zu gewährleisten, daß das Target die Meßspulen über den gesamten Meßbereich sowohl in X- als auch in Y-Richtung überlagert und dadurch über den gesamten Meßbereich des Weg-Winkel-Sensors eine besonders hohe Genauigkeit erzielt wird, wird gemäß einer besonders vorteilhaften Weiterbildung der Erfindung vorgeschlagen, daß die in X-Richtung gegenüberliegenden Meßspulen eine Breite aufweisen, die mindestens so groß ist wie die Abmessungen des Target in Y-Richtung zuzüglich des doppelten Meßbereichs Δy und daß die in Y-Richtung gegenüberliegenden Meßspulen eine Breite aufweisen, die mindestens so groß ist wie die Abmessungen des Target in X-Richtung zuzüglich des doppelten Meßbereichs Δx.In order for the path-angle sensor with the at least partially overlapping Measuring coils to ensure that the target the measuring coils over the entire Measuring range overlaid in both the X and Y directions and thus over the entire measuring range of the displacement-angle sensor a particularly high accuracy is achieved, according to a particularly advantageous development of the invention proposed that the measuring coils opposite in the X direction have a width have at least as large as the dimensions of the target in the Y direction plus double the measuring range Δy and that in the Y direction opposite measuring coils have a width that is at least as large like the dimensions of the target in the X direction plus double Measuring range Δx.

Gemäß einer anderen vorteilhaften Weiterbildung der Erfindung wird vorgeschlagen, daß jeweils zwei gegenüber liegende Meßspulen zu einer induktiven Halbbrücke zusammengeschaltet sind. Die induktiven Halbbrücken sind wiederum in wechselspannungsgespeiste Brückenschaltungen (Auswerteschaltungen der Auswerteelektronik) einbezogen. Die Auswerteelektronik kann somit aus den in den Meßspulen induzierten Spannungen die Position des Target relativ zu den Meßspulen und dessen Winkel-Position ermitteln.According to another advantageous development of the invention, it is proposed that that each two opposing measuring coils to an inductive half bridge are interconnected. The inductive half bridges are again in AC-powered bridge circuits (evaluation circuits of the Evaluation electronics) included. The evaluation electronics can thus from the in the Measuring coils induced voltages the position of the target relative to the measuring coils and determine its angular position.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist das Target um eine in Y-Richtung verlaufende Lagerachse drehbar, und der Spulenträger weist die Form eines Zylindersegments auf, wobei die Lagerachse die Längsachse des Zylinders bildet. Dadurch wird gewährleistet, daß auch bei kreisbogenförmigen Bewegungen des Target relativ zu den Meßspulen stets ein konstanter Abstand zwischen dem Target und den Meßspulen gegeben ist. Durch diesen stets konstanten Abstand zwischen Target und Meßspulen wird die Meßgenauigkeit des erfindungsgemäßen Weg-Winkel-Sensors entscheidend verbessert.According to an advantageous development of the invention, the target is around one in the Y direction extending bearing axis rotatable, and the coil carrier has the shape of a cylinder segment, the bearing axis being the longitudinal axis of the cylinder forms. This ensures that even with circular movements the target relative to the measuring coils always a constant distance between the Target and the measuring coils is given. Because of this constant distance between the target and the measuring coils, the measuring accuracy of the invention Path-angle sensor significantly improved.

Nach einer vorteilhaften Weiterbildung der Erfindung wird vorgeschlagen, daß der Spulenträger in einer zylinderförmigen Aussparung eines Sensorgehäuses eingespannt ist. Dadurch kann ein an sich ebener Spulenträger ohne großen Aufwand in die Form eines Zylindersegments gebracht werden. In besonders vorteilhafter Weise ist der Spulenträger in der zylinderförmigen Aussparung des Sensorgehäuses eingerastet. Alternativ kann der Spulenträger aber auch durch ein zylinderförmig gewölbtes Element in die zylinderförmige Aussparung des Sensorgehäuses gedrückt werden. Dies hat den Vorteil, daß das zylinderförmig gewölbte Element den Spulenträger mit den darauf angeordneten Meßspulen vor äußeren Einflüssen, insbesondere vor mechanischen Beschädigungen und Feuchtigkeit, schützen kann.According to an advantageous development of the invention, it is proposed that the Coil carrier in a cylindrical recess in a sensor housing is clamped. As a result, a coil carrier which is flat per se can be used without great effort be brought into the shape of a cylinder segment. Especially The coil carrier is advantageously in the cylindrical recess of the Sensor housing snapped into place. Alternatively, the coil carrier can also be replaced by a cylindrical curved element in the cylindrical recess of the Sensor housing are pressed. This has the advantage that it is cylindrical curved element in front of the coil carrier with the measuring coils arranged thereon external influences, especially mechanical damage and Moisture, can protect.

Alternativ zu der zuvor dargestellten Ausbildung des Spulenträgers als ein Zylindersegment, kann der Spulenträger gemäß einer weiteren vorteilhaften Weiterbildung der Erfindung die Form eines Kugelsegments aufweisen. In diesem Fall ist das Target um einen Lagerpunkt drehbar, der den Mittelpunkt der Kugel bildet. Dadurch wird gewährleistet, daß auch bei kugelsegmentförmigen Bewegungen des Target relativ zu den Meßspulen stets ein konstanter Abstand zwischen dem Target und den Meßspulen gegeben ist. Durch diesen stets konstanten Abstand zwischen Target und Meßspulen wird die Meßgenauigkeit des erfindungsgemäßen Weg-Winkel-Sensors entscheidend verbessert. Diese Weiterbildung hat sich in der Praxis beim Einsatz des erfindungsgemäßen Weg-Winkel-Sensors im Kraftfahrzeugbereich zur Bestimmung des eingelegten Ganges als besonders bedeutsam erwiesen, da der Gangwahlhebel meistens um einen Lagerpunkt drehbar ist und sich demnach relativ zu den Meßspulen auf einer kugelsegmentförmigen Ebene bewegt.As an alternative to the embodiment of the coil carrier shown above as one Cylinder segment, the bobbin can be advantageous according to another Further development of the invention have the shape of a spherical segment. In this Case the target is rotatable about a bearing point that is the center of the ball forms. This ensures that even with spherical segment Movements of the target relative to the measuring coils always a constant distance between the target and the measuring coils. Through this always constant distance between target and measuring coils, the measuring accuracy of the displacement-angle sensor according to the invention significantly improved. This Further development has been found in practice when using the displacement-angle sensor according to the invention in the motor vehicle sector for determining the gear engaged proven to be particularly important since the gear selector lever is usually one Bearing point is rotatable and accordingly relative to the measuring coils on a spherical segment-shaped plane moves.

Gemäß einer besonders vorteilhaften Weiterbildung der Erfindung besteht das Target aus Aluminium. Das führt zu einer Reduktion des Gewichts des erfindungsgemäßen Weg-Winkel-Sensors.According to a particularly advantageous development of the invention, there is Target made of aluminum. This leads to a reduction in the weight of the displacement-angle sensor according to the invention.

Alternativ kann das Target gemäß einer anderen Weiterbildung der Erfindung aber auch aus einem ferromagnetischen Material bestehen. Ein Target aus diesem Material eignet sich besonders gut für die induktive Weg- und Winkelmessung.Alternatively, according to another development of the invention, the target can also consist of a ferromagnetic material. A target from this Material is particularly suitable for inductive displacement and angle measurement.

Gemäß einer vorteilhaften Weiterbildung der Erfindung besteht der Spulenkörper aus Kunststoff.According to an advantageous development of the invention, the coil former consists of Plastic.

In einer anderen vorteilhaften Weiterbildung der Erfindung wird vorgeschlagen, daß die Meßspulen aus Spulendraht gewickelt sind. Alternativ können die Meßspulen zur Reduzierung der Herstellungskosten aber auch auf dem Spulenträger aufgedruckt sein. Die Meßspulen an sich können die unterschiedlichsten Formen aufweisen und auf besondere Einsatzgebiete und Einsatzbedingungen abgestimmt sein. So sind nicht nur quadratische Meßspulenquerschnitte sondern beispielsweise auch halbkreisförmige Querschnitte denkbar. Die Meßspulen kann beispielsweise flach oder halbkugelförmig ausgebildet sein. In another advantageous development of the invention it is proposed that the measuring coils are wound from coil wire. Alternatively, the measuring coils can Reduction of the manufacturing costs but also printed on the bobbin be. The measuring coils themselves can have a wide variety of shapes and be tailored to specific areas of application and conditions of use. So are not only square measuring coil cross sections but also for example semicircular cross sections conceivable. The measuring coils can be flat, for example or be hemispherical.

Es gibt nun verschiedene Möglichkeiten, die Lehre der vorliegenden Erfindung in vorteilhafter Weise auszugestalten und weiterzubilden. Dazu ist einerseits auf die dem Patentanspruch 1 nachgeordneten Ansprüche, andererseits auf die nachfolgende Erläuterung zweier Ausführungsbeispiele der Erfindung anhand der Zeichnung zu verweisen. In Verbindung mit der Erläuterung der bevorzugten Ausführungsbeispiele der Erfindung anhand der Zeichnung werden auch im allgemeinen bevorzugte Ausgestaltungen und Weiterbildungen des beanspruchten Weg-Winkel-Sensors erläutert. In der Zeichnung zeigt:

Fig. 1
einen erfindungsgemäßen Weg-Winkel-Sensor in Draufsicht in einer ersten Ausführungsform,
Fig. 2
einen erfindungsgemäßen Weg-Winkel-Sensor in Draufsicht in einer zweiten Ausführungsform und
Fig. 3
den erfindungsgemäßen Weg-Winkel-Sensor in perspektivischer Ansicht in der Ausführungsform aus Fig. 1,
wobei in der Zeichnung
Figure 00060001
bedeuten.There are now various possibilities for advantageously designing and developing the teaching of the present invention. For this purpose, on the one hand, reference is made to the claims subordinate to claim 1, and on the other hand to the following explanation of two exemplary embodiments of the invention with reference to the drawing. In connection with the explanation of the preferred exemplary embodiments of the invention with reference to the drawing, generally preferred configurations and developments of the claimed displacement-angle sensor are also explained. The drawing shows:
Fig. 1
a displacement-angle sensor according to the invention in plan view in a first embodiment,
Fig. 2
a path-angle sensor according to the invention in plan view in a second embodiment and
Fig. 3
the displacement-angle sensor according to the invention in a perspective view in the embodiment from FIG. 1,
being in the drawing
Figure 00060001
mean.

In Fig. 1 ist ein erfindungsgemäßer Weg-Winkel-Sensor in einer ersten Ausführungsform in seiner Gesamtheit mit dem Bezugszeichen 1 bezeichnet. Der Weg-Winkel-Sensor 1 weist einen in der X-Y-Ebene gelegenen Spulenträger 2 aus Kunststoff auf, auf dem in einem Winkel von 90° zueinander vier Meßspulen 3, 4, 5, 6 angeordnet sind. Die Lage des Weg-Winkel-Sensors 1 in dem kartesischen Koordinatensystem ist rein zufällig gewählt, und hat lediglich rein erläuternden Charakter. Die Meßspulen 3, 4, 5, 6 sind an eine Auswerteelektronik (nicht dargestellt) angeschlossen. Der Weg-Winkel-Sensor 1 weist außerdem ein Target 7 aus ferromagnetischem Material auf, das im wesentlichen parallel zu der X-Y-Ebene relativ zu den Meßspulen 3, 4, 5, 6 bewegbar ist. Das Target 7 überlagert zumindest in seiner Mittelstellung alle vier Meßspulen 3, 4, 5, 6 zumindest teilweise. Durch die Bewegung des Target 7 werden in den Meßspulen 3, 4, 5, 6 Spannungen Uind3, Uind4, Uind5, Uind6 induziert. Aus den Induktionsspannungen Uind3, Uind4, Uind5, Uind6 ermittelt die Auswerteelektronik den zurückgelegten Weg s in Y-Richtung und den Winkel α des Targets in einer Z-X-Ebene. Genauer gesagt wird der zurückgelegte Weg s aus den Induktionsspannungen Uind3 und Uind5 der beiden Meßspulen 3 und 5 ermittelt, und der Winkel α aus den Induktionsspannungen Uind4 und Uind6 der beiden Meßspulen 4 und 6 ermittelt.In Fig. 1, a displacement-angle sensor according to the invention is designated in its entirety with the reference number 1 in a first embodiment. The displacement-angle sensor 1 has a coil carrier 2 made of plastic in the XY plane, on which four measuring coils 3, 4, 5, 6 are arranged at an angle of 90 ° to one another. The position of the displacement-angle sensor 1 in the Cartesian coordinate system is chosen purely at random and is only of an explanatory nature. The measuring coils 3, 4, 5, 6 are connected to evaluation electronics (not shown). The displacement angle sensor 1 also has a target 7 made of ferromagnetic material, which can be moved essentially parallel to the XY plane relative to the measuring coils 3, 4, 5, 6. The target 7 at least partially overlaps all four measuring coils 3, 4, 5, 6 at least in its central position. The movement of the target 7 induces voltages U ind3 , U ind4 , U ind5 , U ind6 in the measuring coils 3, 4, 5, 6. From the induction voltages U ind3 , U ind4 , U ind5 , U ind6, the evaluation electronics determine the distance s traveled in the Y direction and the angle α of the target in a ZX plane. More precisely, the distance covered s is determined from the induction voltages U ind3 and U ind5 of the two measuring coils 3 and 5, and the angle α is determined from the induction voltages U ind4 and U ind6 of the two measuring coils 4 and 6.

Beim Einsatz des erfindungsgemäßen Weg-Winkel-Sensors 1 im Kraftfahrzeugbereich zur Bestimmung eines eingelegten Ganges wird das Target 7 mit dem Gangwahlhebel (nicht dargestellt) starr verbunden und folgt seinen Bewegungen während des Schaltvorgangs. Der Spulenträger 2 mit den darauf angeordneten Meßspulen 3, 4, 5, 6 ist an der Schaltkulisse (nicht dargestellt) befestigt, relativ zu der sich der Schalthebel während des Schaltvorgangs bewegt. Wenn nun der Gangwahlhebel zum Einlegen eines bestimmten Ganges während des Schaltvorganges relativ zu der Schaltkulisse bewegt wird, bewegt sich auch das Target 7 relativ zu den Meßspulen 3, 4, 5, 6. Dadurch werden in den Meßspulen 3, 4, 5, 6 Spannungen Uind3, Uind4, Uind5, Uind6 induziert, aus denen die Auswerteelektronik die Position des Gangwahlhebels in Y-Richtung und dessen Winkel in der Z-X-Ebene ermittelt.When the displacement-angle sensor 1 according to the invention is used in the motor vehicle sector to determine an engaged gear, the target 7 is rigidly connected to the gear selector lever (not shown) and follows its movements during the shifting process. The coil carrier 2 with the measuring coils 3, 4, 5, 6 arranged thereon is fastened to the shifting gate (not shown), relative to which the shifting lever moves during the shifting process. If the gear selector lever for shifting a specific gear is moved relative to the shifting gate during the shifting process, the target 7 also moves relative to the measuring coils 3, 4, 5, 6. This results in voltages in the measuring coils 3, 4, 5, 6 U ind3 , U ind4, U ind5 , U ind6 , from which the evaluation electronics determine the position of the gear selector lever in the Y direction and its angle in the ZX plane.

Jeweils zwei gegenüber liegende Meßspulen 3 und 5 bzw. 4 und 6 sind zu einer induktiven Halbbrücke (nicht dargestellt) zusammengeschaltet. Die induktiven Halbbrücken sind wiederum in wechselspannungsgespeisten Brückenschaltungen (Auswerteschaltungen der Auswerteelektronik) einbezogen.Each two opposite measuring coils 3 and 5 or 4 and 6 are one inductive half bridge (not shown) interconnected. The inductive Half bridges are in turn in AC-powered bridge circuits (Evaluation circuits of the evaluation electronics) included.

Bei dem in Fig. 1 dargestellten Weg-Winkel-Sensor sind die jeweils gegenüber liegenden Meßspulen 3 und 5 bzw. 4 und 6 in einem Abstand zueinander angeordnet. Die jeweils benachbarten Meßspulen 3, 4, 5, 6 überlagern sich zumindest teilweise. Die in X-Richtung gegenüber liegenden Meßspulen 4 und 6 weisen eine Breite auf, die mindestens so groß ist wie die Abmessungen des Target 7 in Y-Richtung zuzüglich des doppelten Meßbereichs Δy. Die in Y-Richtung gegenüber liegenden Meßspulen 3 und 5 weisen eine Breite auf, die mindestens so groß ist wie die Abmessungen des Target 7 in X-Richtung zuzüglich des doppelten Meßbereichs Δx.In the path-angle sensor shown in FIG. 1, they are opposite each other lying measuring coils 3 and 5 or 4 and 6 at a distance from each other arranged. The respectively adjacent measuring coils 3, 4, 5, 6 overlap at least partially. The measuring coils 4 and 6 lying opposite in the X direction have a width that is at least as large as the dimensions of the target 7 in the Y direction plus twice the measuring range Δy. The one in the Y direction across from lying measuring coils 3 and 5 have a width that is at least as large is like the dimensions of the target 7 in the X direction plus double Measuring range Δx.

Bei dem in Fig. 2 dargestellten Weg-Winkel-Sensor in einer zweiten Ausführungsform sind die vier Meßspulen 3, 4, 5, 6 nebeneinander auf dem Spulenträger 2 angeordnet. Das Target 7 überlagert die zwei in X-Richtung gegenüber liegenden Meßspulen 4 und 6 jeweils mindestens um den Meßbereich Δx und die zwei in Y-Richtung gegenüber liegenden Meßspulen 3 und 5 jeweils mindestens um den Meßbereich Δy.In the path-angle sensor shown in Fig. 2 in a second Embodiment are the four measuring coils 3, 4, 5, 6 side by side on the Coil carrier 2 arranged. The target 7 overlaps the two in the X direction opposite measuring coils 4 and 6 each at least around the measuring range Δx and the two measuring coils 3 and 5 opposite each other in the Y direction at least around the measuring range Δy.

In Fig. 3 ist der Weg-Winkel-Sensor 1 in der Ausführungsform aus Fig. 1 in perspektivischer Ansicht dargestellt. Das Target 7 ist um eine in Y-Richtung verlaufende Lagerachse 8 drehbar. Der Spulenträger 2 weist die Form eines Zylindersegments auf, wobei die Lagerachse 8 die Längsachse des Zylinders bildet. Der Weg-Winkel-Sensor 1 ermittelt den von dem Target 7 in Y-Richtung zurückgelegten Weg s und den Winkel α des Target 7 um die Lagerachse 8 in einer Z-X-Ebene.In FIG. 3, the displacement angle sensor 1 in the embodiment from FIG. 1 is in shown perspective view. The target 7 is around one in the Y direction extending bearing axis 8 rotatable. The coil carrier 2 has the shape of a Cylinder segment, with the bearing axis 8 forming the longitudinal axis of the cylinder. The displacement angle sensor 1 determines that of the target 7 in the Y direction traveled distance s and the angle α of the target 7 about the bearing axis 8 in one Z-X plane.

Der Spulenträger 2 weist an sich eine ebene Form auf. Um ihn in die Form eines Zylindersegments zu bekommen wird er in eine zylinderförmige Aussparung eines Sensorgehäuses (nicht dargestellt) eingespannt. Das stellt bei einem Spulenträger 2 aus biegbarem Kunststoff kein Problem dar. Bei den auf dem Spulenkörper 2 angeordneten Meßspulen 3, 4, 5, 6 muß darauf geachtet werden, daß sie von dem Spulenmaterial her und von der Befestigungsart auf dem Spulenkörper 2 her diese Biegung in die Form eines Zylindersegments aushalten. Der Spulenkörper 2 ist in der zylinderförmigen Aussparung des Sensorgehäuses entweder eingerastet oder wird durch ein zylinderförmig gewölbtes Element in die zylinderförmige Aussparung des Sensorgehäuses gedrückt und darin verankert.The coil carrier 2 has a flat shape per se. To put it in the shape of a To get a cylinder segment, it is placed in a cylindrical recess in one Sensor housing (not shown) clamped. This is the case with a coil carrier 2 made of bendable plastic is no problem. In the case of the bobbin 2 arranged measuring coils 3, 4, 5, 6 must be ensured that they from the Coil material here and this from the type of attachment to the coil body 2 Bear the bend in the shape of a cylinder segment. The bobbin 2 is in the cylindrical recess of the sensor housing either snapped or is in the cylindrical recess by a cylindrically curved element of the sensor housing and anchored in it.

Im übrigen wird auf die beschreibenden Bestandteile der Figuren 1 bis 3 verwiesen. For the rest, reference is made to the descriptive components of FIGS. 1 to 3.

Abschließend sei ganz besonders hervorgehoben, daß das voranstehend lediglich beispielhaft erörterte Ausführungsbeispiel eines erfindungsgemäßen Verfahrens zur Erläuterung der beanspruchten Lehre dient, dieses jedoch nicht auf das rein willkürlich gewählte Ausführungsbeispiel einschränkt.In conclusion, it should be particularly emphasized that the above is merely exemplary embodiment of an inventive method for Explanation of the claimed teaching serves, but this is not purely arbitrary selected embodiment limits.

Claims (18)

Weg-Winkel-Sensor (1), insbesondere zur Bestimmung eines eingelegten Ganges im Kraftfahrzeugbereich,
dadurch gekennzeichnet, daß er vier Meßspulen (3, 4, 5, 6), die in einer X-Y-Ebene auf einem Spulenträger (2) in einem Winkel von 90° zueinander angeordnet und an eine Auswerteelektronik angeschlossen sind, und ein Target (7) aufweist, das im wesentlichen parallel zu der X-Y-Ebene relativ zu den Meßspulen (3, 4, 5, 6) bewegbar ist und dadurch in den Meßspulen (3, 4, 5, 6) Spannungen (Uind3, Uind4, Uind5, Uind6) induziert, aus denen die Auswerteelektronik den zurückgelegten Weg s in Y-Richtung und den Winkel α des Target (7) in einer Z-X-Ebene ermittelt.Displacement-angle sensor (1), in particular for determining an engaged gear in the motor vehicle area,
characterized in that it has four measuring coils (3, 4, 5, 6), which are arranged in an XY plane on a coil support (2) at an angle of 90 ° to one another and are connected to an evaluation electronics, and a target (7) which can be moved essentially parallel to the XY plane relative to the measuring coils (3, 4, 5, 6) and thereby voltages (U ind3 , U ind4 , U ind5. ) in the measuring coils (3, 4, 5, 6) , U ind6 ), from which the evaluation electronics determine the distance s traveled in the Y direction and the angle α of the target (7) in a ZX plane. Weg-Winkel-Sensor (1) nach Anspruch 1, dadurch gekennzeichnet, daß das Target (7) zumindest in der Mittelstellung alle vier Meßspulen (3, 4, 5, 6) zumindest teilweise überlagert.Path-angle sensor (1) according to claim 1, characterized in that the Target (7) at least in the middle position at least all four measuring coils (3, 4, 5, 6) partially overlaid. Weg-Winkel-Sensor (1) nach Anspruch 2, dadurch gekennzeichnet, daß das Target (7) die zwei in X-Richtung gegenüber liegenden Meßspulen (4, 6) jeweils mindestens um den Meßbereich Δx überlagert.Path-angle sensor (1) according to claim 2, characterized in that the Target (7) the two measuring coils (4, 6) opposite each other in the X direction overlaid by at least the measuring range Δx. Weg-Winkel-Sensor (1) nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Target (7) die zwei in Y-Richtung gegenüber liegenden Meßspulen (3, 5) jeweils mindestens um den Meßbereich Δy überlagert.Path-angle sensor (1) according to claim 2 or 3, characterized in that the target (7) has the two measuring coils (3, 5) opposite each other in the Y direction each overlaid by at least the measuring range Δy. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die jeweils gegenüber liegenden Meßspulen (3, 5 und 4, 6) in einem Abstand zueinander angeordnet sind und die benachbarten Meßspulen (3, 4; 4, 5; 5, 6 und 6, 3) sich jeweils zumindest teilweise überlagern. Path-angle sensor (1) according to one of claims 1 to 4, characterized characterized in that the respective opposite measuring coils (3, 5 and 4, 6) in are arranged at a distance from one another and the adjacent measuring coils (3, 4; 4, 5; 5, 6 and 6, 3) each overlap at least partially. Weg-Winkel-Sensor (1) nach Anspruch 5, dadurch gekennzeichnet, daß die in X-Richtung gegenüber liegenden Meßspulen (4, 6) eine Breite aufweisen, die mindestens so groß ist wie die Abmessungen des Target (7) in Y-Richtung zuzüglich des doppelten Meßbereichs Δy.Path-angle sensor (1) according to claim 5, characterized in that the in X-direction opposite measuring coils (4, 6) have a width that is at least as large as the dimensions of the target (7) in the Y direction plus twice the measuring range Δy. Weg-Winkel-Sensor (1) nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die in Y-Richtung gegenüber liegenden Meßspulen (3, 5) eine Breite aufweisen, die mindestens so groß ist wie die Abmessungen des Target (7) in X-Richtung zuzüglich des doppelten Meßbereichs Δx.Path-angle sensor (1) according to claim 5 or 6, characterized in that the measuring coils (3, 5) lying opposite in the Y direction have a width, which is at least as large as the dimensions of the target (7) in the X direction plus twice the measuring range Δx. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß jeweils zwei gegenüber liegende Meßspulen (3, 5 und 4, 6) zu einer induktiven Halbbrücke zusammengeschaltet sind.Path-angle sensor (1) according to one of claims 1 to 7, characterized characterized in that two opposite measuring coils (3, 5 and 4, 6) each an inductive half-bridge are interconnected. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Target (7) um eine in Y-Richtung verlaufende Lagerachse (8) drehbar ist und der Spulenträger (2) die Form eines Zylindersegments aufweist, wobei die Lagerachse (8) die Längsachse des Zylinders bildet.Path-angle sensor (1) according to one of claims 1 to 8, characterized characterized in that the target (7) about a bearing axis running in the Y direction (8) is rotatable and the coil carrier (2) has the shape of a cylinder segment, the bearing axis (8) forming the longitudinal axis of the cylinder. Weg-Winkel-Sensor (1) nach Anspruch 9, dadurch gekennzeichnet, daß der Spulenträger (2) in einer zylinderförmigen Aussparung eines Sensorgehäuses eingespannt ist.Path-angle sensor (1) according to claim 9, characterized in that the Coil carrier (2) in a cylindrical recess in a sensor housing is clamped. Weg-Winkel-Sensor (1) nach Anspruch 10, dadurch gekennzeichnet, daß der Spulenträger (2) in der zylinderförmigen Aussparung des Sensorgehäuses eingerastet ist.Path-angle sensor (1) according to claim 10, characterized in that the Coil carrier (2) in the cylindrical recess of the sensor housing is engaged. Weg-Winkel-Sensor (1) nach Anspruch 10, dadurch gekennzeichnet, daß der Spulenträger (2) durch ein zylinderförmig gewölbtes Element in die zylinderförmige Aussparung des Sensorgehäuses gedrückt wird.Path-angle sensor (1) according to claim 10, characterized in that the Coil carrier (2) through a cylindrical curved element in the cylindrical Recess of the sensor housing is pressed. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Target (7) um einen Lagerpunkt drehbar ist und der Spulenträger (2) die Form eines Kugelsegments aufweist, wobei der Lagerpunkt den Mittelpunkt der Kugel bildet.Path-angle sensor (1) according to one of claims 1 to 8, characterized characterized in that the target (7) is rotatable about a bearing point and the Coil carrier (2) has the shape of a spherical segment, the bearing point being the Forms the center of the sphere. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß das Target (7) aus Aluminium besteht.Path-angle sensor (1) according to one of claims 1 to 13, characterized characterized in that the target (7) consists of aluminum. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß das Target (7) aus einem ferromagnetischen Material besteht.Path-angle sensor (1) according to one of claims 1 to 13, characterized characterized in that the target (7) consists of a ferromagnetic material. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß der Spulenträger (2) aus Kunststoff besteht.Path-angle sensor (1) according to one of claims 1 to 15, characterized characterized in that the coil carrier (2) consists of plastic. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die Meßspulen (3, 4, 5, 6) aus Spulendraht gewickelt sind.Path-angle sensor (1) according to one of claims 1 to 16, characterized characterized in that the measuring coils (3, 4, 5, 6) are wound from coil wire. Weg-Winkel-Sensor (1) nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Meßspulen (3, 4, 5, 6) auf den Spulenträger aufgedruckt sind.Path-angle sensor (1) according to one of claims 1 to 17, characterized characterized in that the measuring coils (3, 4, 5, 6) are printed on the coil carrier are.
EP99102133A 1998-02-17 1999-02-03 Displacement and angle sensor Expired - Lifetime EP0936385B1 (en)

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GB2362931A (en) * 2000-05-31 2001-12-05 Tokai Rika Denki Siesakusho Ka Shift lever sensor operated by an immobilizer ECU having a user identification device
WO2002057658A1 (en) * 2001-01-22 2002-07-25 ZF Lemförder Metallwaren AG Shifting device for shifting between different operating states of a motor vehicle transmission
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Cited By (13)

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Publication number Priority date Publication date Assignee Title
GB2362931B (en) * 2000-05-31 2004-06-30 Tokai Rika Denki Siesakusho Ka Shift lever device
US6547696B2 (en) 2000-05-31 2003-04-15 Kabushiki Kaisha Tokai Rika Denki Seisakusho Shift lever device
GB2362931A (en) * 2000-05-31 2001-12-05 Tokai Rika Denki Siesakusho Ka Shift lever sensor operated by an immobilizer ECU having a user identification device
US6629473B2 (en) 2000-05-31 2003-10-07 Kabushiki Kaisha Tokai Rika Denki Seisakusho Shift lever device
WO2002057658A1 (en) * 2001-01-22 2002-07-25 ZF Lemförder Metallwaren AG Shifting device for shifting between different operating states of a motor vehicle transmission
US6761081B2 (en) 2001-01-22 2004-07-13 ZF Lemförder Metallwaren AG Shifting device for shifting between different operating states of a motor vehicle transmission
FR2835786A1 (en) * 2002-02-11 2003-08-15 Renault Motor vehicle gear shift lever guide has guide grill with lever mounted on pair of orthogonally sliding rails
WO2003078871A1 (en) * 2002-03-15 2003-09-25 Paragon Ag Actuation device
US7633026B2 (en) 2002-09-12 2009-12-15 Zf Friedrichshafen Ag Inductive switch
US7701201B2 (en) 2003-09-11 2010-04-20 Cherry Gmbh Inductive switch
EP1688709A3 (en) * 2004-12-17 2016-11-23 ZF Friedrichshafen AG Inductive sensor unit
CN100437034C (en) * 2006-07-06 2008-11-26 西安工业大学 Differential electric sensing type bidimensional displacement measuring sensor
US7719263B2 (en) 2006-11-22 2010-05-18 Zf Friedrichshafen Ag Inductive position measuring device or goniometer

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EP0936385B1 (en) 2003-07-09
DE19806529C2 (en) 2002-04-18
DE19806529A1 (en) 1999-08-19
EP0936385A3 (en) 2001-05-30
DE59906220D1 (en) 2003-08-14
HK1024734A1 (en) 2000-10-20

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